Resultados de la búsqueda
-
Relationship between distribution of Antarctic krill (Euphausia superba) and environmental index MTEM-200 in the Antarctic Ocean throughout the year
oceanographic conditions have been an age-old recurrent problem and many papers have been published on the ... stable for fishing were distributed in a narrow range with steep meridional gradients between-1.0 and 1.0 ... be applied for the further analysis of seasonal and/or annual variability. Author(s): M. Naganobu, T ... superba) and environmental index MTEM-200 in the Antarctic Ocean throughout the year Approval: Approved ...
Meeting Document : WG-EMM-08/32 : Autor(es): M. Naganobu, T. Kitamura and K. Hasunuma (Japan)
-
Antarctic krill, Euphausia superba Dana, demography studies in the seas of Sodruzhestvo and Cosmonauts (Indian Ocean sector of Antarctica)
Antarctic seas for the period from 1985 to 1990 are analyzed to form an opinion about its growth, life ... , duration of E.superba life cycle somewhat exceeds 5 years in the Sea of Cosmonauts and 6 years in the Sea ... . Bertalanffy growth curves calculated for different areas are close to that obtained by Australian researchers ... (Hosie et al., 1988) for the Prydz Bay by data for 1981-1985. Basing on long-term observations, relations ...
Meeting Document : WG-KRILL-93/45 : Autor(es): E.A. Pakhomov (Ukraine)
-
Broadbandwidth sound scattering and absorption from krill (Meganyctiphanes norvegica), Mysids (Praunus flexuousus and Neomysis integer) and shrimp (Crangon crangon)
volume of the animal. Collectively, these results provide tools for improving the detection of krill and ... (Meganyctiphanes norvegica) over the acoustical bandwidth of 30 to 210 kHz and compared to similar scattering ... target strength (TTS) match the SDWBA model (Demer and Conti, 2003b) recently developed for Antarctic ... krill, indicating its validity for other euphausiids species with similar size and shape. However, the ...
Meeting Document : WG-EMM-04/40 : Autor(es): S.G. Conti, D.A. Demer (USA) and A.S. Brierley (United Kingdom)
-
Do the males of Dissostichus eleginoides grow faster, or only mature before females?
concluded that the males mature for the first time at 4 years age and females at 10 years age, reaching 100 ... - were age transformed applying the age-size relationship obtained from the specific equations for each ... % maturity at 12 years age the males and 21 years age the females. Author(s): C.A. Moreno (Chile) Title: Do ... maturity at age and not due to the growth rate. Based on this sample of 434 females and 398 males, it is ...
Meeting Document : WG-FSA-98/16 Rev. 1 : Autor(es): C.A. Moreno (Chile)
-
New data on spawning, hatching and growth of the Kerguelen Islands Champsocephalus gunnari shelf stock
programme allows to identify each year, both from the ichthyoplanktonic surveys and bottom trawlings, an ... Abstract: Combined studies on the inner shelf and outer shelf of the Kerguelen islands (1989/90 ... to 1992/93) provides new informations about Champsocephalus gunnari stock. An inner shelf quaterly ... in the samples along the study. It would explain the previouly observed three years cycle. Spawners ...
Meeting Document : WG-FSA-94/9 Rev. 1 : Autor(es): G. Duhamel (France)
-
A re-analysis of the Kerguelen Shelf and Skiff Bank stocks of Champsocephalus gunnari
for the Age 2 Kerguelen Shelf stock, an order of magnitude lower than that calculated from a biomass ... -frequency data for the years 1981 to 1990. Cohort analysis yielded a Stock Biomass of 22 711 tonnes in 1988 ...
Meeting Document : WG-FSA-90/17 : Autor(es): G. Duhamel (France) and D.J. Agnew (Secretariat)
-
The recent decline in recruitment of Gobionotothen gibberifrons in the South Shetland Islands (CCAMLR Subarea 48.1)
Shetland Islands ceased after the 1989/90 season. One of the larger and most abundant species in the area ... ’s. In 2012, the proportion of immature fish (<30 cm) in the population was less than 10 ... caused a number of years of very low recruitment around Elephant Island and the lower South Shetland ...
Meeting Document : WG-FSA-12/20 : Autor(es): K.-H. Kock (Germany) and C.D. Jones (USA)
-
A PRELIMINARY BALANCED TROPHIC MODEL OF THE ECOSYSTEM OF THE ROSS SEA, ANTARCTICA, WITH EMPHASIS ON APEX PREDATORS
toothfish. A survey of the available literature and both published and unpublished data provided an initial ... Sea as a step towards investigating ecosystem effects of the fishery for Antarctic toothfish ... (Dissostichus mawsoni). The model has 30 trophic groups representing all the major biota of the Ross Sea. Many ... , exports), energetics (growth, reproduction, consumption), and trophic linkages (diets, key predators) for ...
Meeting Document : WG-EMM-08/42 : Autor(es): M.H. Pinkerton, J.M. Bradford-Grieve and S.M. Hanchet (New Zealand)
-
Further development of pairwise tag detection performance index and its application to the stock assessment of toothfish in the Ross Sea fishery
algorithm, more than 90% of all tags released and recaptured were selected for inclusion. We recommend this ... Abstract: Tag release and recapture data are used in integrated age-structured stock assessments ... ) could lead to an over-estimate of the stock biomass. In this paper we develop further an index of vessel ... -specific tag detection performance for the Ross Sea fishery using a case-control methodology which controls ...
Meeting Document : WG-SAM-13/34 : Autor(es): S. Mormede (New Zealand)
-
Interannual variability in Antarctic krill (Euphausia superba) density at South Georgia, Southern Ocean: 1997 – 2013
the WCB in that year. WCB krill density (µ, mean density for the area) showed several years (1997-8 ... , 2001-2003, 2005-2007) of high values (µ > 30 g m-2) interspersed with years (1999-2000, 2004, 2009 ... estimates for a 17 year time series of acoustic surveys of the Western Core Box at South Georgia. Krill ... . Hence, only the densest krill swarms detected in any one year drove the mean krill density estimates for ...
Meeting Document : WG-EMM-14/P04 : Autor(es): S. Fielding, J. Watkins, P. Trathan et al.